Previous rumors of a quad core smartphone from Samsung proved to be true at the 2012 Samsung Unpacked event in London on Thursday. There, they officially unveiled the Samsung Galaxy S III Android 4.0 smartphone.

The new smartphone runs the latest Android 4.0 “Ice Cream Sandwich” mobile operating system with an updated version of Samsung’s TouchWiz interface that adds additional functionality on top of the vanilla Android experience. Many sites have mentioned that Samsung really focused in on the software and experience aspects of the phone rather than the underlying hardware specifications and performance characteristics.

The company is introducing a number of new features with the Galaxy S III including voice control with S Voice, “S Beam” wireless file transfer, and a feature called “Pop up Play” that allows users to play videos while checking email and browsing the web. The S Voice feature lets users turn their phone on by saying “Hi, Galaxy” as well as writing emails, sending text messages, hitting “snooze” on the alarm, organizing schedules, and taking photos. Another feature that the Galaxy S III offers is NFC payment.

On the hardware side of things, the smartphone measures 136.6 x 70.6 x 8.6 mm, and weighs 133g. On the outside, there is a 4.8 inch HD Super AMOLED Pentile display with a resolution of 1280×720. There is a 1.9 megapixel camera on the front and a 8 megapixel camera on the back with backside illumination to improve low light performance. The phone is available in Pebble Blue and Marble White at launch, with additional color options to follow. Powering the software and HD display is a 2,100 mAh battery, 16, 32, or 64 (coming soon) Gigabytes of storage, microSD card slot, 1GB of RAM, and a Exynos 4 quad core processor. It also features 802.11 a/b/g/n WiFi (support channel bonding), GPS, GLONASS (radio navigation system), NFC, and Bluetooth 4. As far as cellular technology, it supports EDGE, 3G, and 4G (depending on which model you buy–more on that below).

Matt at Engadget managed to shoot some video of the new Samsung phone at the launch event, seen below.

While some models will run the Exynos 4 quad core processor, the US version will likely have a dual core Qualcomm processor due to incompatibilities between the necessary LTE radio and the Exynos 4 SoC. In the end, the general user experience should not suffer as a result but it is still regrettable that there is not a quad core part from a hardware perspective. Because the Exynos 4 SoC is based on older ARMv7 CPU cores and a Mali 400 GPU core, it will be faster in multithreaded tasks but the newer dual core Qualcomm in the LTE models will be faster in general usage thanks to the newer CPU technology and Android’s notoriously poor multithreaded performance. Users should not write off the dual core Galaxy S III phones on specifications alone.

The phone will be available for purchase in Europe at the end of May, with other countries to follow. No official word on pricing has been given yet.

Are you still excited for the US Galaxy S III now that it is official? Will you be upgrading or waiting on one of the other upcoming Android smatphones?